PHP仅在条目为数字时删除行
此代码设置在灯组上。我的删除页面有问题。PHP中的Delete函数只有在mysql表中的条目是数字时才起作用。我需要它来删除该行,而不考虑条目。在mysql中,电子邮件字段设置为varchar25。我没有在代码中定义变量,所以我不明白为什么它只限于数字 页面如下:PHP仅在条目为数字时删除行,php,mysql,sql-delete,Php,Mysql,Sql Delete,此代码设置在灯组上。我的删除页面有问题。PHP中的Delete函数只有在mysql表中的条目是数字时才起作用。我需要它来删除该行,而不考虑条目。在mysql中,电子邮件字段设置为varchar25。我没有在代码中定义变量,所以我不明白为什么它只限于数字 页面如下: <!DOCTYPE HTML> <html> <head> </head> <body> <div id="gradientbackground">
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>
<div id="gradientbackground">
<table class="beachpictures" align="center" border="1">
<thead>
<tr>
<th>Name</th>
<th>Email</th>
<th>Website</th>
<th>Gender</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<?php
require 'project_db.php';
mysql_connect("$servername", "$username", "$password")or die("cannot connect");
mysql_select_db("$database")or die("cannot select DB");
//execute the SQL query and return records
if (!$result = mysql_query("SELECT * FROM $table"))
echo 'mysql error: ' .mysql_error();
//fetch tha data from the database
while ($row = mysql_fetch_array($result)) {
?>
<tr>
<td><?php echo $row['Name']; ?></td>
<td><?php echo $row['Email']; ?></td>
<td><?php echo $row['Website']; ?></td>
<td><?php echo $row['Gender']; ?></td>
<td class="record-delete">
<form action='delete.php?Email="<?php echo $row['Email']; ?>"' method="post">
<input type="hidden" name="Email" value="<?php echo $row['Email']; ?>">
<input type="submit" name="submit" value="Delete">
</form>
</td>
</tr>
<?php }
?>
</tbody>
</table>
<br>
</div>
</body>
</html>
下面是执行实际查询的delete.php文件:
<?php
require 'project_db.php';
mysql_connect("$servername", "$username", "$password")or die("cannot connect");
mysql_select_db("$database")or die("cannot select DB");
//Define the query
$query = "DELETE FROM $table WHERE Email={$_POST['Email']} LIMIT 1";
//sends the query to delete the entry
mysql_query ($query);
if (mysql_affected_rows() > 0) {
//if it updated
?>
<strong>Record Has Been Deleted</strong><br /><br />
<?php
} else {
//if it failed
?>
<strong>Deletion Failed</strong><br /><br />
<?php
}
?>
您需要添加引号:否则,mysql将期望$u POST['email']是一个数字。 另外,您应该切换到或,因为mysql_*函数已被弃用,并且您已向打开。 因此,您的代码应该是:
<?php
require 'project_db.php';
$connect = mysqli_connect($servername,$username,$password,$database)or die("cannot connect");
//Define the query
$query = "DELETE FROM $table WHERE Email='".mysqli_real_escape_string($connect,$_POST['Email'])."' LIMIT 1";
//sends the query to delete the entry
$execute = mysqli_query ($connect,$query);
if (mysqli_affected_rows($execute) > 0) {
//if it updated
?>
<strong>Record Has Been Deleted</strong><br /><br />
<?php
} else {
//if it failed
?>
<strong>Deletion Failed</strong><br /><br />
<?php
}
?>
这很有效!!非常感谢。唯一剩下的问题是,即使它实际上成功了,它还是失败了。@Noor不客气:这是我的错,对不起,我更新了我的答案,现在它应该可以工作了谢谢@Stude,它没有修复它,但后来我颠倒了两条语句,它工作得很好-非常感谢@不,我很高兴你解决了: